Users Guide

Parameters
brief (OPTIONAL) Enter the keyword brief to view a synopsis of the RSTP conguration
information.
guard (OPTIONAL) Enter the keyword guard to display the type of guard enabled on an RSTP
interface and the current port state.
Command Modes
• EXEC
• EXEC Privilege
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.4.2.1 Added support for the optional guard keyword on the C-Series, S-Series, and E-Series.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.4.1.0 Expanded to display the port error disable state (EDS) caused by loopback BPDU
inconsistency.
6.2.1.1 Introduced on the E-Series.
Usage Information The following describes the show spanning-tree rstp guard command shown in the following example.
Field Description
Interface Name RSTP interface.
Instance RSTP instance.
Sts Port state: root-inconsistent (INCON Root), forwarding (FWD), listening (LIS), blocking
(BLK), disabled (DIS), or shut down (EDS Shut).
Guard Type Types of STP guard congured (Root, Loop, or BPDU guard)
Example (Brief)
Dell# show spanning-tree rstp brief
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 8192, Address 0001.e805.e306
Root Bridge hello time 4, max age 20, forward delay 15
Bridge ID Priority 16384, Address 0001.e801.6aa8
Configured hello time 2, max age 20, forward delay 15
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
---------- ------- --- ------- -------------------- --------
1282 Rapid Spanning Tree Protocol (RSTP)